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expert

[n., v. ek-spurt; adj. ek-spurt, ik-spurt] /n., v. ˈɛk spɜrt; adj. ˈɛk spɜrt, ɪkˈspɜrt/
noun
1.
a person who has special skill or knowledge in some particular field; specialist; authority:
a language expert.
2.
Military.
  1. the highest rating in rifle marksmanship, above that of marksman and sharpshooter.
  2. a person who has achieved such a rating.
adjective
3.
possessing special skill or knowledge; trained by practice; skillful or skilled (often followed by in or at):
an expert driver; to be expert at driving a car.
4.
pertaining to, coming from, or characteristic of an expert:
expert work; expert advice.
verb (used with object)
5.
to act as an expert for.
Origin
1325-1375
1325-75; Middle English (adj.) < Latin expertus, past participle of experīrī to try, experience
Related forms
expertly, adverb
expertness, noun
nonexpert, noun, adjective
proexpert, adjective
unexpert, adjective
Synonyms
1. connoisseur, master. 3. experienced, proficient, dexterous. See skillful.
Antonyms
3. unskillful.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for expertly

expert

/ˈɛkspɜːt/
noun
1.
a person who has extensive skill or knowledge in a particular field
adjective
2.
skilful or knowledgeable
3.
of, involving, or done by an expert: an expert job
Derived Forms
expertly, adverb
expertness, noun
Word Origin
C14: from Latin expertus known by experience, from experīrī to test; see experience
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for expertly

expert

adj.

late 14c., from Old French expert and directly from Latin expertus, past participle of experiri "to try, test" (see experience). The noun sense of "person wise through experience" existed 15c., reappeared 1825. Related: Expertly.

Online Etymology Dictionary, © 2010 Douglas Harper
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